android 解决vedeoView设置高度无效的问题

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/android_I_t/article/details/51851285

在android中，是不允许给VideoView自行设置高度的，宽度是可以的，所以只能通过自定VideoView来设置高度，具体步骤如下：

1.在项目的values文件夹下建立文件attrs.xml，在里面添加如下内容：

<span style="font-size:24px;"><strong><resources>

    <!-- VideoView的相关属性 -->
    <declare-styleable name="MyVideoView">
        <attr name="videoView_width" format="dimension"/>
        <attr name="videoView_height" format="dimension"/>
    </declare-styleable>
</resources></strong></span>

2.在布局文件中添加改自定义组件:

<RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <com.view.MyVideoView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/vv_camera_player"
                app:videoView_width="120dp"
                app:videoView_height="180dp"/>
        </RelativeLayout>

3.定义一个类继承自VideoView,在onMeasure中进行高度设置：

<strong style="font-size:24px;">public class MyVideoView extends VideoView {

    TypedArray typedArray ;
    private int viewWidth ;
    private int viewHeight ;

    public HoloVideoView(Context context) {
        this(context,null);
    }

    public HoloVideoView(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public HoloVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyVideoView);
        viewWidth = typedArray.getDimensionPixelSize(R.styleable.</strong><span style="font-size:18px; font-family: Arial, Helvetica, sans-serif;">MyVideoView</span><span style="font-size:18px; font-family: Arial, Helvetica, sans-serif;">_videoView_width, 0) ;</span><strong style="font-size:18px;">
<span style="font-size:18px;">          </span><span style="font-size:24px;">viewHeight = typedArray.getDimensionPixelSize(R.styleable.</span></strong><span style="font-family: Arial, Helvetica, sans-serif;"><span style="font-size:24px;">MyVideoView</span></span><strong><span style="font-size:24px;">_videoView_height,0) ;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        setMeasuredDimension(viewWidth, viewHeight);
    }

}</span></strong>

4.最后在Activity中使用正常的VideoView一样使用即可，视频文件放在raw目录下，播放视频文件代码如下：

String path = "android.resource://"+  getPackageName() + "/raw/guide_video" ;
				if (path!=null) {
					Uri uri = Uri.parse(path);
					vvCamera.setMediaController(new MediaController(this));
					vvCamera.setVideoURI(uri);
					vvCamera.start();
				}